line drive. the pitcher is 60 6 from the batter, in other word, he is a sitting duck. reporter: now serious questions for major league baseball. players say they need more protection. whoever comes up with the solution for this is, never going to have to work again in their life. reporter: it is not just major leaguers sounding the alarm. so are parents of young players. in 2010, gunner sandberg then 16, was hit in the head by a line drive. and was in a coma for three weeks. he came back to the game and threw his support behind plans for a new protective pitching helmet made by eastman. it s very comfortable. reporter: two years later the mlb hasn t used the design. but the league has considered lining caps with bulletproof kevlar. the league has not approved any headgear for pitchers. cobb was released from the hospital yesterday afternoon, placed on a seven-day concussion disabled list that and that keeps him off the field for now. gio benitez, new york. they have to d